source: branches/stable/mindi-busybox/e2fsprogs/ext2fs/io_manager.c @ 821

Last change on this file since 821 was 821, checked in by bruno, 13 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 1.3 KB
Line 
1/*
2 * io_manager.c --- the I/O manager abstraction
3 */
4
5#include <stdio.h>
6#include <string.h>
7#if HAVE_UNISTD_H
8#include <unistd.h>
9#endif
10#include <fcntl.h>
11#include <time.h>
12#if HAVE_SYS_STAT_H
13#include <sys/stat.h>
14#endif
15#if HAVE_SYS_TYPES_H
16#include <sys/types.h>
17#endif
18
19#include "ext2_fs.h"
20#include "ext2fs.h"
21
22errcode_t io_channel_set_options(io_channel channel, const char *opts)
23{
24    errcode_t retval = 0;
25    char *next, *ptr, *options, *arg;
26
27    EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
28
29    if (!opts)
30        return 0;
31
32    if (!channel->manager->set_option)
33        return EXT2_ET_INVALID_ARGUMENT;
34
35    options = malloc(strlen(opts)+1);
36    if (!options)
37        return EXT2_ET_NO_MEMORY;
38    strcpy(options, opts);
39    ptr = options;
40
41    while (ptr && *ptr) {
42        next = strchr(ptr, '&');
43        if (next)
44            *next++ = 0;
45
46        arg = strchr(ptr, '=');
47        if (arg)
48            *arg++ = 0;
49
50        retval = (channel->manager->set_option)(channel, ptr, arg);
51        if (retval)
52            break;
53        ptr = next;
54    }
55    free(options);
56    return retval;
57}
58
59errcode_t io_channel_write_byte(io_channel channel, unsigned long offset,
60                int count, const void *data)
61{
62    EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
63
64    if (channel->manager->write_byte)
65        return channel->manager->write_byte(channel, offset,
66                            count, data);
67
68    return EXT2_ET_UNIMPLEMENTED;
69}
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